.zengjia{
    width: 560px;
    height: 400px;
    background-color: #2aabd2;
}
.xinzengyonghu{
    width: 560px;
    height: 50px;
    margin: 0 auto;
    background-color:#9d9d9d;
}
.usertable{
    width: 560px;
    height: 350px;
    background-color: #b2dba1;
}